Window-screen.



No. 821,384. PATENTED MAY 22, 1906. H. E. SOUTI-IWORTH. WINDOW SCREEN.

APPLICATION FILED BEPT.10.1904.

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` iiNrrnn srnrns PATENT OFFICE'.

HENRY E. SOUTHWORTH, OF COLOHESTER, VERMONT, ASSIGNOR TO PORTER SCREEN MANUFACTURING COMPANY, OF BURLINGTON,

. VERMONT.

WINDOW-SCREEN.

Specification of Letters Patent.

Patented May 22, 1906.

Application filed September 10, 1904. Serial No. 223,955.

To all whom t 77cm/ cm1/ omvat Be it -known that I, HENRY E. SoUri-I- WORTH, of Colchester, in the county of Chittenden and State of Vermont, have invented certain new and useful Improvements `in Window-Screens, of which the following is a specification.

My invention relates to two-part eXtension-screens, which are eXtensible by reason of one part sliding on the other, and Vmore particularly to that class of such screens in which the devices connecting the screen-sections are concealed from view.

Ihe object of the invention is to produce a simple, cheap, and ei'licient screen of this kind; to which end the invention consists of the parts and combinations of parts which will first be described by reference to the accompanying drawings, and will then be pointed out more particularly in the claims.

In the drawings, Figure 1 is a perspective view of the screen with parts broken away to expose the working devices within. Fig. 2 is a transverse vertical section of the screen. Fig. 3 is a view of one of the clips used to hold the sections together. Fig. 4 is a perspective view of a portion of one of the rails, showing the manner of securing the center iron in place. Fig. 5 is a view of a portion of a rail B, showing by dotted lines the two cuts or saw-kerfs made in it.

The two sections of the screen are the same in construction, so that a description of one will answer for both.

The frame of each section is composed of outer end rail A, top and bottom rails B B, having the usual tongue-and-groove connection with the end rail, and a sheet-metal angie-iron strip C or center iron, as it is usually termed, which forms the fourth side of the frame. In the interior opposite faces of the overlapping rails B B of the two sections are formed longitudinal rabbets I), from the rear and bottom of which longitudinal 'vertical grooves E extend into the body of the rails,

such rabbet and its groove forming a channel. The wire gauze or netting for each frame is secured by its vertical edges to the end rails A C in the usual way, and its longitudinal vedges are received and secured in the rabbets D, where they are covered by the moldings or filling-strips F, the inner edges of which do not reach to the bottoms of the recesses, but are separated therefrom by an interval, so as to leave in each rail B a longitudinal opening or slot G, which leads to the vertical groove E therein.

The inner rail or center iron C is of the construction shown` and described in VVays patent, No. 687,466, of November 26,1901. The ends of the center iron are bent over outwardly, as at c, thus forming hook ends, and in the body of the rails B are formed-longitudinal grooves G on the prolongation of the slots G and at about right angles to the inner faces of the rails. One of the purposes of these grooves Gis to afford a sure anchorage for the hook ends of the center iron, which are turned outwardly, so as to enter and engage the` grooves. In Ways patent, No.

687,466, hereinbefore referred to, the end of i,

fact furnishes an absolute and substantial lock. Moreover, by putting the groove G in the body of the rail in the position shown it can be formed at the same timel with the groove E, thus effecting a considerable saving in the cost of manufacture. two screen-sections are put together, the grooves G E in the two overlapping rails B will form a continuous slot or groove of substantially U shape or channel shape in crosssection, as indicated in Fig. 2.

Sheetmetal clips H of corresponding shape in cross-section are employed to hold the screen-sections together, there being one clip for each rail B. The legs of the clip t in and engage the two grooves E of each pair of rails B, and the horizontal portion of the clip which connects the legs extends across from one rail of the pair tothe other through the slot formed by the registering openings G G. In each pair of rails one clip is secured in a suitable way (in this instance by nails) by one of its legs to one of the rails, and the other clip is similarly secured by one of its legs to the other rail, and the other leg of each clip can slide freely in the groove E in the opposite rail. The clips are preferably secured to the ends of their rails B which eX- tend inwardly beyond the center irons and wire-netting.

When the .TOO

In order to produce the grooves, &c., in the rails B all that is needed is to make in it and lengthwise of it the two intersecting cuts, (indicated by dotted lines in Fig. 5,) which cuts can readily be made at one operation by two saws properly placed to successively act on the rail. In this way there will be produced at one operation the rabbet, the filling-strip, and the two grooves E G. The groove E is the "retaining-groove-that is to say, the groove which is engaged by one of the retaining-legs of the clip. The other groove G has no such function. I utilize it in the present'instance as an anchorage for the center iron, but aside from that it may be used to receive any suitable part moving with and forming part of the clip, like, for example, a flange laterally projecting from the clip, by which the clip willbe guidedin its movement and have itsstability better as sured. On that leg of the clip which is secured to the rail is formed an enlargement h in the shape of a spur, tooth, or other suitable projection, which is intended to retain the clip more securely in place. When the clip is driven into the groove E in the end of the rail to which it is to be secured, this projection catches in and engages the body of the rail and holds the clip motionless in place therein.

Vhat I claim herein as new and of my own invention is as follows:

1. In an extensible screen, overlapping screen-sections having in the meeting faces of their rails which overlap longitudinal rabbets and vertical retaining-grooves which extend from the bottom of the rabbets into the body of the rails, horizontal grooves which extend from the back of the rabbets into the body of the rails, coupling members applied to and uniting the sections as described, and t center irons forming the inner vertical rails of the sections said center irons extending into the rabbets and having outwardlyturned hook ends which enter and engage the horizontal grooves at the back of the rabbets, substantially as and for the purposes herein before set forth.

2. In an extensible screen, overlapping screen-sections having in the meeting faces of their rails which are arranged to overlap longitudinal rabbets, retaining-grooves which extend from the bottom of the rabbets into the body of the rail's, and horizontal grooves which extend from the back of the rabbets into the body of the rails, substantially as de scribed.

In testimony whereof I afx my signature in presence of two witnesses.

HENRY E. SOUTHWORTI-I.

Witnesses:

H. F. WoLcoTT, H. U. WAY. 

